Created attachment 362430 [details] build logs I have attached build logs for 9.07 and 9.10. This may be present in other versions too, I don't know because I couldn't try it (cups-filters dep).
I extracted the patches archive using cpio -ivd -H tar. It extracted fine and now GS 9.10 has been installed successfully. Attaching the new tar archive and the ebuild (updated manifest).
Created attachment 363774 [details] New tar archive corrected using cpio -ivd -H tar
Created attachment 363776 [details] Updated ebuild, contains manifest as needed by the updated tar
gcc 4.8 + O3 + i5-4670 on app-arch/tar isn't okay. Found out in a recent IRC discussion while debugging this issue for another ebuild.